Sliding-horn kick-back dump.



SLIDING HORN KICK-BACK DUMP.

APPLICATION FILED APR. 28, I9I5. 1,221,669 Patented Apr. 3,1917.

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nvmv TOR 75/701545 M 506 65 A TTORNEVS SLIDING HORN KICK-BACK DUMP. APPLICATION FILED APR. 28. 1915.

1 8% L662, Patented I. 3, 1917.

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ATTORNEYS TI-IADDEUS MORTON BOGG-S, OF MONONGAHELA, PENNSYLVANIA.

SLIDING-HORN KICK-BACK DUMP.

Specification of Letters Patent.

Patented Apr. 3, 1917.

Application filed April 28, 1915. Serial No. 24,507.

To all whom it may concern:

Be it known that I, THADDEUS M. BOGGS, a citizen of the United States, and a resident of Monongahela, in the county of WVashington and State of Pennsylvania, have invented a certain new and useful Improvement in Sliding-Horn Kick-Back Dumps, of which the followingis a specification.

This invention relates to an improved dumping device for mine cars and the like.

One of the principal objects of the invention is to provide an improved dump of such a nature that the mine car when upon the dump, and after it has been emptied of its contents, is kicked or precipitated off of the dump automatically in order to be re turned to the point of loading;

Another object of the invention is to provide an improved dump in the nature of a tilting platform normally maintained in horizontal position and provided with sliding horns connected with springs in such manner that when the car strikes the horns the latter are moved for compressing the springs, and remain in this position until,

after the car has become emptied, the plat-.

form moves into normal position, whereupon a mechanism provided for the purpose operates to release the horns and thus allows them, through the action of the springs, to ,kick or precipitate the car from the platform in order to drive it along a trackway back to the loading place.

Still another object of the invention is to provide an improved dump of the class described in which the sliding horns operate independently of each other, that is, are unconnected from each other, whereby the device may operate with-an equal degree of efliciency with mine cars in which the wheels are out of alinement, as with those in which the wheels are truly alined.

A further object of the invention is to provide an improved dump of the class de scribed which will be extremely simple, durable, efficient in operation, and inexpensive to manufacture.

/Vith these and other objects in view which will become apparent'as the description proceeds, the invention resides in the construction, combination, and arrangement of parts hereinafter more fully described and claimed, and illustrated in the accompanying drawings in which like characters of reference indicate like parts throughout the several figures, of which Figure 1 represents a plan view of a dump constructed according to my invention...

Fig. 2 represents a side elevational view thereof.

Fig. 3 represents a diagrammatical view of the arrangement of tracks leading. to and from the dump.

Fig. 4 represents a view in side elevation of the dump in operation, and showing the same as tilted in such position as to empty an ore car. I

Fig. 5 represents a rear end elevational view of the device. v

Fig. 6 represents a front end elevational view thereof.

In carrying out my invention, I provide a substantially rectangular bed plate or platform indicated at 5 and composed of suitable strips of metal riveted or otherwise securely connected together. Transversely of the bed plate and beneath the same, extend theparallel' spaced channel irons 6. The latter at their ends are connected by the metallic strips or bars 7 which run longitudinally of the platform or bed plate. On top of thebed plate or platform, and centrally thereof, are secured the angle irons 8 which form a tongue extending forwardly of said bed plate. Between them is disposed a bar 9 to which said angle irons are suitably secured. At the outer end of the tongue and between the angle irons, is pivoted the upper end of a curved arm 10 .at 11 as indicated in Fig. 2. This curved arm slidably extends through a brake mechanism indicated at 12 and which is supported suitably upon a portion of the framework indicated in part at 13 which supports the dump.

On suitable spaced members or beams of this framework 13 are secured the rocker plates or racks 14. Upon these racks are adapted to rest the rocker arms 15 carried at the sides of the bed plate or platform and which extend toward the rear end thereof. The rocker arms 15 serve as means whereb} the platform is supported in such manner that it may be tilted rearwardly, the rocker arms being supported for oscillation upon the rocker plates or racks 14:. The latter near their rear ends are provided with upstanding lugs or cars 16 adapted to pre- I rocker arms may as shown be provided on their under surfaces with spaced teeth 17 adapted to engage in spaced recesses or indentations in the rocker plates 14:, to also act .as means whereby the rocker arms will be prevented from'slipping off of said plates.

Between the rear spaced ends 18 of the 1 pairs of angle irons 19 disposed on top of platform 5, and adjacent the edges thereof, are slidably disposed the horns 20. The latter are adapted to reciprocate longitudinally of the platform within certain limits, and

at their forward edges are concaved as at 21 for the reception of the wheels of a mine car- The angle irons or bars 19 act as tracks upon which the mine cars may move. -The cars are adapted to move onto the platform from the tracks indicated at 22. The latter are suitably supported upon the frameor trestle-work 13. Y r

Each of the horns 20 at its lower end is suitably secured to the rear end, oradjacent the rear end, of a shaft 23. The latter is slidably extended through openings provided in alinement with each other in the lateral channel irons 6. Suitable washers or plates 24: are secured to the channel irons and surround the openings and afiord a wider bearing surface for the shafts 23. Each of the shafts 23 at its forward end is flattened on the sides and is pivoted between the ears formed at the rear end of a pawl 25 as at 26. Each of these pawls is provided with a depending tooth 27 adapted to ride upon a rack bar 28 suitably secured to one of the bars 7 Interposed upon each shaft 23 between one of the channel irons 6 and a washer or collar 29 slidably disposed upon said shaft, is a coiled spring 30. On the opposite side of the washer 29 from the coiled spring and turned upon a threaded portion of the shaft, is a pair of'lock nuts 31. By adjusting the latter, the tension of spring 30 may be adjusted. c

'On each of thepawls 25 at the forward free end of; the same, is provided a laterally extending pin 32 on which a roller 33 is carried. These rollers extend outwardly.

from the pawl toward the members or beams of the framework 13 on which the rocker plates 14: are disposed. Adapted to coact with each of the pawls through the medium of the roller 33 is a detent or tripper 34:. These trippers as indicated in Fig. 6, are substantially L-shaped and are each pivotally connected'to one of the beams of the framework in such manner that a finger 35 forming a portion of the tripper, extends inwardly-toward the platform. The trippers are of the gravity actuable type and are normally disposed in the position indicated in'Fig. 6."

The operation of the device may be briefly described as follows: When a loaded car coming from the mine, moves from the track 22 onto the platform upon the track 19,

and as the front wheels of the car engage the platform to tilt into the position indicated in Fig. 4. As the platform tilts backwardly, the rollers 33 on the pawls 25 move upwardly in an arc of a circle, and engage and lift the trippers 3 1, far enough to allow passage of the rollers above said trippers, whereupon the latter automatically fall back into normal position. \Vhen the platform swings up into the position indicated in Fig. 4: the weight of the car may tend further to shift the horns rearwardly in such manner as to compress the springs to a still greater degree. As soon as the car has dumped its contents. the center of gravity shifting forwardly beyond the pivotal point of the device, operates to automatically move the platform back into normal position. As the platform swings back and substantially simultaneously with the attainment of its normal horizontal position,

ately the springs in shifting back tonormal position operate to quickly throw the horns back into normal position, thus kicking or precipitating the car off of the platform onto the track 22. The length of the trippers 3 1 with respect to the direction of movementof the shafts 23, is such that the rollers will not move off of the ends of the trippers until the parts have attained their normal positions, so that the detent will not thus become released and be allowed to fall until the parts have again attained their normal positions. Were this not so, the pawls in falling prematurely might allow the engagement of the teeth 27 with the rack bars while the springs were still partially under tension, so that the full effect of the energy stored in the springs would not be obtained. As the dump moves back into normalposition, the brake 12 automatically operates in such manner as to In Fig.31 have shown an arrangement of track ways which may be utilized in connection with the dump to great advantage. In the figure at 36, is shown a straight track leading from the mine to the dump. Alongside track 36 runs a siding 37 which is connected with the track 36 intermediate the ends of the latter by the switches 38. The operation is such that the full cars come down the track from the mine in the direc-' tion indicated in the arrows, onto the dump, and upon being kicked off of the dump, are switched automatically onto the siding 37 and go back to the mine at the same time that another loaded car is coming down the straight track.

It will be noted that the mechanisms with which each horn 20 is connected operate independently of each other, that is, they are not connected together by any mechanism which would tend to make the horns operate in unison. The advantage attained by this lies in the fact that oftentimes the car wheels of the mine cars are not in transverse alinement with each other. By having the horns operable independently of each other, the variations in the transverse alinement of the wheels will be taken care of, and at the same time both horns will come into play so that extraordinary strain will not be placed upon either one of them.

Although I have described the preferred embodiment of my invention, I may desire to make such changes in the construction, combination, and arrangement of parts thereof as do not depart from the spirit of the invention and the scope of the appended claims.

I claim 1. In a device of the class described, the combination of a platform adapted to be tilted into dumping position, a track way provided on the platform, a pair of horns each arranged adjacent the rear end of one rail of the track way and in such manner as to reciprocate longitudinally of the platform, a shaft to which each horn is connected, cross pieces carried by the platform through which the shafts slidably extend, a spring carried by each shaft and adapted when the shaft is shifted rearwardly to be placed under compression, a stationary rack bar associated with each shaft, a pawl pivotally connected to each shaft and being provided with a dog adapted to coact with the rack bar in maintaining the shaft in position against the tension of the spring, a pair of trippers associated with the platform and being actuable so as to be moved out of normal position against the action of gravity, and a roller associated with each pawl and adapted when the platform is moved into tilting position to engage one of the trippers whereby -to allow passage of the roller beyond the tripper, said trippers adapted when the platform is moved into normal position to be engaged by the rollers for lifting the pawls out of engagement with the rack bars whereby to allow retraction of the horns.

2. A mine car dumping device including a tilting platform having a traekway provided thereon for receiving a mine car, a horn arranged adjacent one end of the trackway and mounted on the platform for sliding movement longitudinally with respect to the trackway and adapted to be shifted in one direction by engagement of the mine car wheel therewith, a shaft with which the horn is connected, a spring mechanism operably connected with the shaft adapted to place the horn under tension when it is shifted by the car wheel, means for restraining the horn against the tension of the spring mechanism, and means for automatically tripping said restraining means as the platform moves into normal position whereby to release said horn.

' A mine car dumping device including a tiltable platform provided with means for receiving a mine car thereon, a horn slidably mounted on the platform adapted to be engaged by a wheel of the mine car to be shifted out of normal position, the platform adapted to simultaneously move into position for dumping the car, a spring means associated with the horn adapted to be placed under tension when the horn is shifted into abnormal position, means for restraining the spring means under tension while the platform is in tilted position, and means leasing the spring means upon movement of the platform into normal position whereby to release the horn.

at. A device of the class described including a platform adapted to be tilted into dumping position, a pair of horns mounted on the platform for sliding-movement and being operable independently of each other and adapted to be shifted by the wheels of a mine car upon movement of the latter onto the platform, a tensioning means associated with each horn and adapted to be actuated whereby to place the horns under tension when in shifted position, means for automatically operating for rehorn is moved, and a trip mechanism adapted toiautomatically coact with the pawl and ratchet mechanism in releasing the latter upon movement of the platform into normal position.

6. In a mine car dumping device, the combination of a tilting platform, horns mounted for sliding movement relatively to the platform and independently of each other, means for placing the horns under tension when shifted out of normal position, and

means for simultaneously tripping the tensioning means for releaslng the horns.

' I 7 In a mine'car dumping device, the combination of independent slidably mounted horns, means for placing them under tension when shifted out of normal position,

and means for releasing the horns.

8. In a mine car dumping device, the comloination of car wheel receiving horns slidaloly mounted independently of each other whereby to receive the car wheels independ- 9. A mine car dumping device, including 30 a; tilting platform having independently mounted slidable horns adapted to receive car wheels and to move out of normal position by engagement of the car wheels with the horns as the platform moves into tilting 35 position, and means for returning the horns to normal position for kicking the car wheels therefrom as the platform moves to normal position.

THADDEUS MORTON BOGGS.

Witnesses:

W. BLAIR CRAVER, A. D. SOI-IOONOVER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Y Washington, 13,0. 

